:root{--bg:#f7f8fb;--sf:#fff;--tx:#111827;--mu:#5b6475;--ln:#e3e6ee;--ac:#4f46e5;--ac2:#7c3aed;--okc:#059669;--wn:#b45309;--sh:0 10px 40px rgba(17,24,39,.10);--r:16px}
[data-theme=dark]{--bg:#0b0d12;--sf:#141821;--tx:#eef0f6;--mu:#9aa3b5;--ln:#262c3a;--ac:#8b85ff;--ac2:#a78bfa;--okc:#34d399;--wn:#fbbf24;--sh:0 10px 40px rgba(0,0,0,.5)}
*{box-sizing:border-box}[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-text-size-adjust:100%}
a{color:inherit}h1,h2,h3{line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em}
.muted{color:var(--mu)}.small{font-size:.875rem}code,pre{font:12.5px ui-monospace,Menlo,Consolas,monospace}
:focus-visible{outline:3px solid var(--ac);outline-offset:2px;border-radius:6px}
header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px clamp(16px,4vw,40px);background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--ln)}
.brand{display:flex;gap:10px;align-items:center;text-decoration:none}.brand b{display:block;font-size:1rem}.brand small{display:block;color:var(--mu);font-size:.75rem}
.logo{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--ac),var(--ac2));color:#fff;font-weight:800;font-size:.85rem}
header nav{display:flex;align-items:center;gap:6px}header nav a{padding:8px 12px;border-radius:8px;text-decoration:none;color:var(--mu);font-size:.9rem}header nav a:hover{color:var(--tx);background:var(--sf)}
.btn,.icon,.seg button{font:inherit;cursor:pointer;border:1px solid var(--ln);background:var(--sf);color:var(--tx);border-radius:12px;padding:10px 18px;font-weight:600;min-height:44px;transition:transform .15s,box-shadow .2s,background .2s}
.btn:hover,.icon:hover{box-shadow:0 4px 14px rgba(0,0,0,.1);transform:translateY(-1px)}
.primary{background:linear-gradient(135deg,var(--ac),var(--ac2));color:#fff;border:0}.lg{padding:14px 32px;font-size:1.05rem}.sm{padding:6px 12px;min-height:36px;font-size:.85rem;border-radius:10px}
.icon{width:44px;padding:0}
.hero{text-align:center;padding:clamp(40px,8vw,88px) 20px 40px;max-width:820px;margin:auto;background:radial-gradient(60% 50% at 50% 0,color-mix(in srgb,var(--ac) 14%,transparent),transparent)}
.hero h1{font-size:clamp(2.1rem,6vw,3.8rem)}.sub{font-size:clamp(1rem,2.2vw,1.2rem);color:var(--mu);max-width:620px;margin:0 auto 28px}.micro{color:var(--mu);font-size:.85rem;margin:12px 0 32px}
.pill{display:inline-block;padding:4px 14px;border:1px solid var(--ln);border-radius:99px;background:var(--sf);font-size:.8rem;color:var(--mu);margin:0 0 20px}
.drop{background:var(--sf);border:2px dashed var(--ln);border-radius:24px;padding:clamp(24px,5vw,44px);box-shadow:var(--sh);transition:border-color .2s,background .2s,transform .2s;cursor:pointer}
.drop.over{border-color:var(--ac);transform:scale(1.015);background:color-mix(in srgb,var(--ac) 7%,var(--sf))}
.drop h2{font-size:1.4rem;margin:.3em 0}.drop p{margin:.5em 0}.dz-ico{display:grid;place-items:center;width:56px;height:56px;margin:auto;border-radius:16px;background:color-mix(in srgb,var(--ac) 12%,transparent);color:var(--ac);font-size:1.6rem;font-weight:700}
.fname{font-weight:700;word-break:break-all}.bar{height:10px;border-radius:9px;background:var(--ln);overflow:hidden;margin:14px 0}.bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--ac),var(--ac2));transition:width .2s}
.sec{max-width:980px;margin:0 auto;padding:56px 20px}.sec>h2{font-size:clamp(1.5rem,3.5vw,2.1rem);text-align:center}
.steps{list-style:none;padding:0;margin:28px 0 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.steps li,.card{background:var(--sf);border:1px solid var(--ln);border-radius:var(--r);padding:24px}.steps span{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--ac),var(--ac2));color:#fff;font-weight:700;margin-bottom:12px}.steps p{margin:0;color:var(--mu)}
.card-wide{background:var(--sf);border:1px solid var(--ln);border-radius:24px;max-width:860px;padding:40px 28px}.card-wide h2{text-align:left}
.two{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:24px}.card ul{padding-left:20px;margin:0;color:var(--mu)}
footer{border-top:1px solid var(--ln);padding:32px clamp(16px,4vw,40px);display:flex;flex-wrap:wrap;gap:20px 40px;align-items:flex-start;justify-content:space-between}footer p{margin:.2em 0}footer nav{display:flex;gap:18px}footer nav a{color:var(--mu);text-decoration:none}footer small,footer .small{width:100%}
.center{min-height:calc(100dvh - 70px);display:grid;place-items:center;padding:20px}.narrow{max-width:560px;width:100%;text-align:center;box-shadow:var(--sh)}
.list{display:grid;gap:8px;margin:16px 0;text-align:left}.list button{font:inherit;text-align:left;padding:12px 14px;border:1px solid var(--ln);border-radius:12px;background:var(--bg);color:var(--tx);cursor:pointer;word-break:break-all;min-height:44px}.list button:hover{border-color:var(--ac)}
.err .dz-ico{background:color-mix(in srgb,var(--wn) 15%,transparent);color:var(--wn)}
#ws{height:100dvh;display:flex;flex-direction:column;background:var(--bg)}
.toolbar{display:flex;align-items:center;gap:10px;padding:8px 12px;border-bottom:1px solid var(--ln);background:var(--sf);overflow-x:auto;white-space:nowrap}.tb-brand{font-size:.9rem}.tb-r{margin-left:auto;display:flex;gap:6px}
.seg{display:flex;border:1px solid var(--ln);border-radius:12px;overflow:hidden}.seg button{border:0;border-radius:0;min-height:36px;padding:6px 12px;font-size:.85rem;background:transparent}.seg button[aria-pressed=true]{background:var(--ac);color:#fff}
.badge{font-size:.75rem;color:var(--okc)}.badge.w{color:var(--wn)}
.work{flex:1;display:flex;min-height:0}#stage{flex:1;overflow:auto;display:flex;justify-content:center;align-items:flex-start;padding:16px;background:radial-gradient(circle at 1px 1px,var(--ln) 1px,transparent 0) 0 0/22px 22px}
#frame{display:flex;flex-direction:column;width:min(100%,1280px);height:100%;background:var(--sf);border:1px solid var(--ln);border-radius:14px;box-shadow:var(--sh);overflow:hidden;transition:width .35s ease,height .35s ease,border-radius .35s}
#frame[data-d=tablet]{width:820px;max-width:100%;height:min(100%,1024px);border-radius:26px}#frame[data-d=mobile]{width:390px;max-width:100%;height:min(100%,800px);border-radius:34px}#frame[data-d=resp]{width:100%}
#frame:fullscreen{width:100%;height:100%;border-radius:0;border:0}
.chrome{display:flex;align-items:center;gap:12px;padding:8px 12px;border-bottom:1px solid var(--ln);background:var(--bg)}.dots{display:flex;gap:6px}.dots i{width:10px;height:10px;border-radius:50%;background:var(--ln)}
.addr{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;background:var(--sf);border:1px solid var(--ln);border-radius:99px;padding:3px 14px;font-size:.8rem;color:var(--mu)}
#ifr{flex:1;border:0;width:100%;background:#fff}
#check{width:340px;border-left:1px solid var(--ln);background:var(--sf);overflow:auto;padding:16px}#check h3{font-size:.95rem;margin:18px 0 8px}.ch-h{display:flex;justify-content:space-between;align-items:center}.ch-h h2{margin:0;font-size:1.1rem}.ch-h .icon{width:36px;min-height:36px;padding:0}
#cb ul{list-style:none;padding:0;color:var(--okc);font-weight:600}#cb details{border:1px solid var(--ln);border-radius:10px;padding:8px 10px;margin:6px 0;font-size:.85rem;word-break:break-all}#cb summary{cursor:pointer}#cb pre{white-space:pre-wrap;word-break:break-word;background:var(--bg);padding:8px;border-radius:8px;margin:6px 0}
#toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);background:var(--tx);color:var(--bg);padding:10px 18px;border-radius:12px;opacity:0;pointer-events:none;transition:.25s;z-index:50;max-width:90vw;font-size:.9rem}#toast.on{opacity:1;transform:translate(-50%,0)}
@media(max-width:720px){header small{display:none}header nav a{padding:8px}.tb-brand{display:none}#check{position:fixed;left:0;right:0;bottom:0;width:auto;height:60dvh;border:1px solid var(--ln);border-radius:20px 20px 0 0;box-shadow:var(--sh);z-index:20}#stage{padding:8px}.seg button[data-d=tablet],.seg button[data-d=mobile]{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}